| Exclusion Criteria: | 1) Patients taking drugs that may further prolong QT intervals and present a known risk for Torsades de Pointes are excluded. Drugs in this class as indicated by the FDA are cisapride, clindamycin, moxifloxacin, gatifloxicin, sparfloxicin, and Sandostatin. Additional drugs are indicated on a web site from University of Arizona (www.qtdrugs.org)
2) The concomitant use of drugs known to be narrow therapeutic index CYP3A4 substrates is excluded (astemizole, cisapride, cyclosporin, ergotamine, fentanyl, quinidine, tacrolimus).
3) Drugs that are sensitive CYP3A4 substrates are excluded (buspirone, felodipine, lovastatin, midazolam, triazolam, simvastatin, sildenafil, vardenafil).
4) Patients who have alcohol or drug dependence currently or in the last 6 months are excluded from this study.
5) Any other events, other than those defined above, in the opinion of the investigator, may make the patient ineligible for this trial. |